How long does LSD stay in your system?

A powerful hallucinogen, LSD can stay in your system and be detected up to 5 days after use. Although it is not physically addictive, LSD use can lead to repeated dosing and psychotic effects. More on what happens in the body when you take LSD below.

What is LSD used for?

People take LSD as a hallucinogen and for its ability to alter human perception and mood. LSD is taken mainly orally, although the potency of liquid LSD in dropper bottles may vary because the liquid is water based. LSD can be also inhaled, injected, and applied to the skin.

Peak levels and half life of LSD

LSD has a plasma half-life of 2.5-4 hours. The onset of LSD effects is rapid following intravenous administration (10 minutes) and slower when taken orally (20-30 minutes). LSD effects usually peak at 2-4 hours and gradually diminishing over 6-8 hours. Residual effects may last longer but usually resolve within 12 hours of dosing.

LSD drug testing

In order to test positive for most types of drugs, at least two criteria must be met:

1. The sample must be positive by the screening test above a set cutoff level 2. The sample must be positive by a confirmation test above a set cutoff level

However, recreational drugs like LSD that have no approved medical use are not tested within therapeutic ranges. Therefore, cutoff concentrations for LSD drug tests are set low: micro detection limits and/or concentrations that are likely to be reached 24 hours after use of a typical dose of the drug (0.5-55 ng/mL). How long does LSD stay in the body? LSD can be detected in urine within 2-5 days of use.

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LSD and addiction

Addiction is a state of physical dependence marked by increased tolerance to a drug combined with physiological withdrawal symptoms when the drug is reduced or withheld from the system.

Addiction and dependence on LSD are possible, although rare. Firstly, tolerance to LSD develops rapidly, but also dissipates rapidly. Tolerance to the behavioral effects of LSD develops rapidly after 3-4 consecutive daily doses. And then sensitivity returns to baseline after 3 to 4 days of abstinence.

Secondly, use of LSD DOES NOT cause patterns of repetitive use over prolonged periods. In fact, the most common psychedelic-use pattern is the occasional trip, separated by intervals of weeks or months. So although long term dependence on LSD can cause psychological and social damage, incidences of physical dependence are rare.

Problems with LSD?

Do you have a problem with LSD that you’d like to share? Maybe a question that you want to answer? Please leave your LSD questions below. We respect all legitimate queries and will respond personally and promptly to your comments, concern or feedback.

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10 Responses to “How long does LSD stay in your system?”

Sandy

3:55 am March 3rd, 2013

Four weeks ago, I smoked weed which I think something was laced in it..most likely LSD because â€¢ my eys got blurred/distortion/telescopic sort-of vision â€¢ I blacked out for a couple of minutes â€¢ I felt like melting in the car seat â€¢ When I scratched myself I couldn’t feel it â€¢ I couldn’t feel my legs and kept falling to the ground without feeling pain

On urban dictionary it says It can cause schitzophrenia in sensitive people; and post-traumatic stress after a bad trip (which means nothing more then that you fought of the effect too mch) and in some cazes flashbacks (random comming back of the effect).

This is exactly what im experiencing. Now i can’t even go in a car. It’s been 4 weeks and i still think about the episode that had happened to me and im feeling anxiety and my heart races as if im experiencing it again. Basically when I go in a car, the movement triggers me and I feel like it’s going to start flying in the air. I never want to go in a car again. This is very bad.

Im thinking of calling an ambulance to analyze my head or something. I dont know what to do. Please tell me what to do.

My doctor prescribed me with anti-depressants and I have not started them yet because im scared that if the street drug is still in my system, there will be an interaction which will be deadly.

Hi Sandy. IT sounds like the weed was definitely laced with something. Synthetic cannabinoids can also produce similar hallucinogenic effects as LSD. I’d suggest that you see a psychiatrist, who is a medical doctor that specializes in diagnosing and treating mind disorders. While the drug has passed through your system, it might be good to have a second opinion about the causes of these symptoms and to get a better understanding of longer term outcomes.

Ines

7:14 pm March 20th, 2014

Last week I had taken about half a tab of acid and right after I started getting these huge bumps under my skin by my neck and around my ear on my right side, I’m going to the doctors today. The bumps are still there and they are as big as a plum, is this normal to happen after taking acid ? Was it the acid that made these bumps? Will it come up if they drug test me? ..

sam

2:15 am June 15th, 2014

I want to find a drug like ambien. i used to take 10 to20 mg tabs. at once,to get high. but would do shit that i don’t remember the next day and end up in jail. what can i take to trip besides that?

Wade

10:41 pm July 25th, 2014

I see that LSD can be detected in urine 2-5 days after use. How about in a blood test or something more thorough?

fergdog420

9:15 pm October 23rd, 2014

hey sandy, having 14 years experience with “trippin” on weed it honestly just sounds like some good weed

Todd

3:21 am November 12th, 2014

I believe I was silp LSD or some kind of halation type drug back in may 2014 it made my wife think I lost it so I went on other drugs for that an that screwrd up are marriage even more I’ve done acid when I was in high school iam 44 havent done any drug like that in all my years after school I know it was no mental break I really feel it was her friends scrrwing with me is there anyway to test that far back it really could repair my marriage that most important to me so could you help I guess hair only works 90 days it’d been a least 7 months

Hi Todd. Sorry to dissapoint you, but there is no such test that can prove the presence of any drug that far back. Any substance taken once and 7 months ago is long gone from your system.

Justin

4:21 am March 9th, 2015

I’m gettin drug tested by the court for sellin weed will they test for LSD. I’m also wanting to no if the synthetic acid tabs will show up in a drug test dont they contain something else other then LSD

Sofia

5:16 am May 13th, 2015

Its been 4 days since I did acid and I kind of still have its effects because when I read something letter do this weird movements and shake an appear bigger and then smaller. Im not exactly scared but I want to know why the hell effects havent stop and if I should worry. Excuse my english.

Hello - I'm on day 8 of taking either one 5-325 or 7.5-325 percocet every 3-4 hours. Once in a while...

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